224 KANSAS UNIVERSITY SCIENCE BULLETIN. 



beyond the apex of the triangle to anastomose and form the median 

 carina in the longitudinal depression of the posterior face; along the 

 outer sides of the triangle are a number of short carinse; the rest of the 

 propodeum is finely punctate and has large sparse punctures in addition. 

 Abdomen polished, evenly rounded, strongly punctate except the first two 

 dorsal segments, whi?h have fine close punctures and large sparse onej; 

 segment 2 has large coarse punctures laterally and ventrally; first ventral 

 segment strongly carinate mesad at base and at sides ; ventral segments 1 

 and 2 have their opposing margins somewhat raised and separate 

 mesad; viewed laterally, ventral segment 2 is transversely excavate 

 behind its thickened anterior margin (see cut) ; pygidium bare, rather 



Fio. 1. 



slender and narrowly rounded apically, with large coarse punctures 

 and a distinct lateral carina for more than its apical half, the sides 

 nearly straight. Light rufovLs, except the dark ocelli, the black tip of 

 mandibles, sometimes the venter of the abdomen in part (which is 

 dusky in the paratype), and a large creamy yellow lateral spot along 

 the posterior margin of the second abdominal tergite and a weaker 

 spot mesad on the basal half of the fifth tergite. Wings clear (with 

 a faint infuscation in marginal and submarginal cells), yellowish in 

 age; stigma creamy yellow, venation dark brown. Face almost bare, 

 some silvery pile on clypeus, and plenty of it on pleurae of thorax and 

 propodeum and on the abdominal spots, especially the two lateral ones; 

 elsewhere the pile is sparse. Length of type, 7.5 mm. 



Two 2 2 ' Grant county, Kansas; 2800 feet; July 25, 1911; F. X. 

 Williams. Type in University of Kansas. 



In Fox's key to the North American species of Gorytes, 

 which genus is to some extent synonymous with Harpactvs 

 (Proc. Acad. Nat. Sci. Phil., 517 ; 1895) , this insect runs either 

 to G. pictifrons Fox, or nigrifrons Sm., depending on whether 

 the wings are entirely clear or subapically infuscate. I do not 

 believe it to be closely related to either of the above species, 

 however. 



Two specimens of this short-winged and rather terrestial 

 species were observed on the flood plain of the north fork of 

 the Cimarron river, Grant county, Kansas, at the end of July. 

 1911. 



